Milliput 101: Gap-Filling and Simple Sculpting for Cleaner Miniatures

Milliput two-part epoxy putty

You glued your miniature together and there's an ugly seam running right across its chest, or a gap where the arm meets the torso. Every hobbyist hits this on day one. The classic, cheap, almost magical fix is Milliput — a two-part epoxy putty that fills gaps, smooths joins and even lets you sculpt simple details. A single pack lasts months.

How to use it

Cut equal amounts from each of the two bars and knead them together until the colour is completely uniform — that mixing is what activates the putty. Press it into the gap with a damp tool or fingertip (water stops it sticking to you), smooth the surface, and leave it to cure rock-hard over a few hours. Once set, it sands, drills and paints exactly like the rest of the model.

Milliput two-part epoxy putty
Milliput comes in several grades — Standard for general work, finer grades for smoother detail and sculpting.

What it's brilliant for

  • Filling seams and gaps on assembled models for a clean, finished look.
  • Building bases — rubble, rock, mud and groundwork all sculpt easily from Milliput.
  • Simple sculpting and repairs — cloaks, hoods, banners, or replacing a part you've lost.
  • Adding weight and strength inside larger models and conversions.

Pro tips

Keep a pot of water handy — a wet tool gives a glass-smooth finish and stops the putty dragging. Work in small amounts; a little goes a long way, and unused putty hardens whether you use it or not. And don't rush the cure: give it a few hours before sanding, or it'll gum up your files.

Grab a pack

We stock the range in our Milliput collection, alongside the glues, clippers and tools to go with it in hobby supplies. It's the kind of unglamorous tool that quietly makes everything you build look more finished.